Jet action carburetor



Jan. 13, 1953 R. F. MORGAN 2,625,469

JET ACTYION CARBURETOR Filed Jan. 26, 1951 2 SHEETS-SHEET 2 'INVENTOR. fiubz'e F/Voryazr awa /awfia:

ATTORNEYS Patented Jan. 13, 1953 JET ACTION CARBURETOR Rubie F. Morgan, Trussville, A1a., assignor of twenty-five per cent to Fred Vann, Trussville,

Ala.

Application January 26, 1951, Serial No. 208,024

3 Claims. 1

This invention relates to fuel mixing jets for internal combustion engines, particularly of the type where. "fuel is converted into vapor by a heater positioned on the exhaust manifold, and in particular. a cone havin spaced graduated perforations in the lower part positioned in a tubular casing and into which the fuel vapor from a heater on the exhaust manifold is discharged whereby the vaporized fuel, being drawn into the tubular casing by the vacuum of the intake manifold is mixed with air and supplied to the cylinders of the engine in a gaseous state.

The purpose of this invention is to save fuel by providing means for breaking down fuel supplied to internal combustion engines whereby the fuel enters the combustion chambers of the cylinders in a highly volatilized state, so that the fuel is used with the highest possible emciency.

Various methods have been employed for supplying gasoline reduced to gaseous form by heaters in combination with exhaust manifolds of internal combustion engines to the engine cylinders, and even though the fuel is reduced to vapor by the heat it is difficult to obtain the proper mixture of the fuel vapor with air whereby efilcient combustion is obtained. With this thought in mind this invention contemplates a fuel atomizer wherein fuel reduced to vapor by heat is discharged into the lower end of a cone with the wall of the cone provided with spaced graduated outlet openings whereby the fuel vapor is drawn from the cone and mixed with air entering the casing through suitable air inlet connections.

The object of this invention is, therefore, to provide a fuel carbureting device in which fuel, reduced to vapor by heat, is mixed with air whereby the mixture may be drawn into the intake manifold of an internal combustion engine for supplyingxfuel in a highly volatilized state to the cylinders of the engine.

Another object of the invention is to provide an improved fuel jet for internal combustion engines which may be mounted on the intake manifold without changing the design or arrangement of the manifold or other parts of the engine,

Another object of the invention is to provide a fuel mixer for internal combustion engines which is of the jet type wherein fuel vapor is sprayed through spaced orifices into air and thoroughly mixed with the air by suction of the intake manifold of the internal combustion engine.

A further object of the invention is to provide an improved fuel jet for supplying fuel vapor to intake manifolds of internal combustion engines which is of a simple and economical construction.

With these and other objects and advantages in view the invention embodies a vertically disposed tubular casing having a butterfly valve in the lower end, with air inlet openings in the sides and a cone suspended by a head having a valve therein extended downwardly into the casing from the upper end and wherein the cone is provided with an inlet tube and spaced graduated outlet orifices.

Other features and advantages of the invention will appear from the following description taken in connection with the drawings wherein:

Figure 1 is a vertical section through the fuel mixer showing a fuel supply line extended from the head of a fuel jet cone positioned in the mixer.

Figure 2 is a, plan view of the fuel jet atomizer.

Figure 3 is a side elevational view showing the jet action cone that extends downwardly into the casing of the device.

Figure 4 is a sectional plan through the cone taken on line 3-4 of Figure 3.

Figure 5 is' similar section through taken on line 5-5 of Figure 3.

Figure 6 is a detail showing a side elevational view of the jet on a small scale illustrating the fuel connection to the jet with the heater therein.

Referring now to the drawings wherein like reference characters denote corresponding parts the improVedJjet action carbureter of this invention includesfa. cone 10 having a head II on the upper end, aii-fuel supply control valve l2 positioned on th'ehead of the cone and havin a tube l3 extended downwardly therefrom and into the lower end of the cone, bleeder valves or plugs l4 and I5 threaded into openings in the head, a tubular casing 16 having a butterfly valve I! in the lower end and air intake openings l8 and I9 spaced from the upper end, and in the upper part of which the cone is positioned, and a rod 20 connecting the butterfly valve H to the valve l2 through levers 2| and 22, and'gears 23 and 24.

The cone ID, as illustrated in Figures 1 and 3, is formed with a conical shaped bore 25 which extends from the upper end of the head downwardly to a point 26 where a shoulder is provided. From the point 26 a bore 21 extends to a, shoulder 28 and from the shoulde 28 a bore 29 extends to a shoulder 30 from which a bore 3| extends to a point 32 spaced from the lower end of the cone, the lower end being closed.

The bore 3| is slightly larger than the tube 13 whereby vapor being discharged from the lower the cone it is threaded into the iower end of the casing 55.

3 end of the tube passes upwardly through the tubular area between the tube I3 and bore 33.

From the lower part of the lower bore 29 to the intermediate part of the bore 2'! the cone is provided with a series of spaced rows of radially 5 disposed orifices 33, 34, 35, 36 and 3?, the sizes of which gradually increase from comparatively small orifices 33 to somewhat larger orifices As an illustration the orifices 33 are preferably .0135 inch in diameter, the orifices 34 are .016 inch, the orifices 35 .016 inch, the orifices 36 .031 inch and the orifices 3i .039 inch.

It will be understood that the sizes of the orifices are only approximate as applicant does not desire to be limited to dimensions as dis- 15 closed herein.

Fuel vapors being discharged from the lower end of the tube l3 pass upwardly and are sprayed radially outwardly through the series of orifices and into the path of air being drawn into the casing through the air inlet openings l8 and I9.

The outer surface of cone is also. provided with spaced radially positioned channels 38 that provide restricted air inlet passages around the outer surface of the cone.

The upper part of the cone is provided with a threaded section 39 by which the cone is threaded into the upper end of the casing it. The head it of the cone is also provided with threaded openings do and 4% into which the plugs M and I5 are threaded and, as illustrated in Figure 4, the plugs are resiliently held outwardly by springs t2. plugs are also provided-with air passages 43 and the passages are provided with openings as that extend through the threads of the plugs.

The upper end of the cone is provided with a ooverplate 65 that is secured to the head by screws 45 and a threaded nipple l? which extends from the boss 43 of the valve I2, extends through the cover plate 45 and is clamped thereto by a lock nut 49. The nipple ll is provided with a threaded extension 58 on which the fuel tube 13 is screwed as illustrated in Figure 1.

The valve 52 is provided with an inlet connection 56 that is connected thereto through a coupling member 52 which is threaded into the end of the valve.

The valve is provided with a valveseat 53 and a valve 54 on the inner end of a stem 55 is positioned to coast with the valve seat to regulate fuel passage through the valve.

The valve stem 55 is threaded throrgh a bushing 56 that is threaded in the valve being positioned in a threaded opening 5? and the gear 24 is secured on the outer end of the by lock. nuts to and 63. The gear Ed is positioned to mesh with the gear 23 one shaft that is journaled in a bearing block 63 and the lever 22 'is clamped on the outer end of the shaft by a screw; 64 which extends through a projection (in 5 5 and is threaded into a similar projection 56. The outerend of the lever 22 is provided with an opening ildn which the upper end of the rod 2% is connected through a member 53, on a pin 53. The lover end of the rod 2% is connected to the Xtended end of lever 2! that is mounted on the outer end of a shatf 69 on which the valve (7 is positioned and the opposite end of the shaft 69 is provided with a ver by which the valve is connected to the is throttle of which the device is no The lower end of th a conventional carbu being provided with a readed collar '52 by which The air inlet connections [8 and I 9 are provided with screens 13 for cleaning air passing into the casing through the inlet connection.

With the parts arranged in this manner the jet action carburetor is supplied with fuel through the tube 5! which extends to a container 14 that is positioned on an exhaust manifold 15 to which it is connected by clamps 76 and H. The container it is provided with a supply connection 18 through which the fuel is supplied from the fuel pump of an engine upon which the carbureter is mounted.

The casing is mounted upon the flange of the intake manifold of the engine with the flange ll connected to the flange of the manifold and by this means fuel, which is reduced to vapor in the container or heater 14 passes through the valve 12 and from the valve through the tube l3 into the cone It from which the vapor is drawn by the vacuum or suction of the intake manifold through the orifices in the wall of the cone whereby the vapor fuel is mixed with air from the inlet connections l3 and i9 and the mixture is drawn into theintake manifold and cylinders of the engine.

The air passing into the interior of the cone is regulated by the air inlet plugs 14 and I5 and with the needle valve 42 connected to the butterfly or throttle valve ll, fuel is admitted to the cone and carburetor with the operation of the foot throttle of the engine.

With the fuel vapors sprayed from the small openings through the wall of the cone, which form a plurality of individual jets, the fuel is volatilized as it is mixed with air passing through the carburetor, and the quantity of fuel required to operate the engine is materially reduced, thereby saving fuel.

It will be understood that modifications may be made in the design and arrangement of the parts without departing from the invention.

What is claimed is:

1. In a carburetor for an internal combustion engine, the combination which comprises a vertically disposed tubular casing having air inlet openings in the sides, an inverted substantially hollow cone having a closed head positioned in said casing with the head of the cone mounted in the upper end of the casing and with the small end of the cone extended downwardly in the easing a point substantially midway of the height thereof, a fuel supply tube mounted in the head is cone and extended downwardly into the r of the cone, a control valve in the head y tube, said cone having spaced I radially disposed orifices therein wher by fuel vapors released into the cone from e form spaced radially disposed sprays tubular casing.

In a'carburetor for an internal combustion engine, the combination which comprises a vertically disposed tubular casing having air inlet openings in the sides, an inverted substantially hollow cone having a closed head positioned in said casing with the head of the cone mounted in the upper end of the casing and with the small end of the cone extended downwardly in the casing to a point substantially midway of i the height thereof, and a'fuel supply tube mounted in the head of the cone and extended downwardly into the interior of the cone, a control valve in the head of the cone and positioned to regulate the flow of fluid to said fuel supply tube, threaded spring actuated plugs spaced from the 5 head and threaded through the Wall of the cone for admitting air to the interior of the cone, said cone having spaced radially disposed channels in the outer surface for admitting air into the upper part of said tubular casing.

3. In a carburetor for an internal combustion engine, the combination which comprises a vertically disposed tubular casing, having air inlet openings in the sides, an inverted substantially hollow cone having a closed head positioned in said casing with the head of the cone threaded into the upper end of the casing and with the small end of the cone extended downwardly into the casing, said head having grooves in the peripheral surface for admitting air into the interior of the tubular casing, spring held plugs having open passages extended therethrough threaded into the head of the cone for admitting air from the atmosphere into the open area in the cone, a fuel inlet passage extended through the head of the cone, a tube extended from said fuel inlet passage into the cone, a needle valve threaded in the head of the cone and positioned to res"- ulate the flow of fuel through said fuel inlet passage, -a butterfly valve positioned in the tubular REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 681,382 Westman Aug. 27, 1901 1,153,891 Breath Sept. 21, 1915 1,598,624 Taylor Sept. '7, 1926 1,890,058 Holzapfel Dec. 6, 1932 1,972,686 Lorenzen Sept. 4, 1934 2,017,239 Fitzgerald Oct. 15, 1935 

1. IN A CARBURETOR FOR AN INTERNAL COMBUSTION ENGINE, THE COMBINATION WHICH COMPRISES A VERTICALLY DISPOSED TUBULAR CASING HAVING AIR INLET OPENINGS IN THE SIDES, AN INVERTED SUBSTANTIALLY HOLLOW CONE HAVING A CLOSED HEAD POSITIONED IN SAID CASING WITH THE HEAD OF THE CONE MOUNTED IN THE UPPER END OF THE CASING AND WITH THE SMALL END OF THE CONE EXTENDED DOWNWARDLY IN THE CASING TO A POINT SUBSTANTIALLY MIDWAY OF THE HEIGHT THEREOF, A FUEL SUPPLY TUBE MOUNTED IN THE HEAD OF THE CONE AND EXTENDED DOWNWARDLY INTO THE INTERIOR OF THE CONE, A CONTROL VALVE IN THE HEAD OF THE CONE AND POSITIONED TO REGULATE THE AREA OF SAID FUEL SUPPLY TUBE, SAID CONE HAVING SPACED ANNULAR ROWS OF RADIALLY DISPOSED ORIFICES THEREIN WHEREBY FUEL VAPORS RELEASED INTO THE CONE FROM SAID TUBE FORM SPACED RADIALLY DISPOSED SPRAYS IN THE TUBULAR CASING. 